Auxiliary air-inlet control



Dec. 8, 1925- v 1,564,547

. J. FARKAS AUXILIARY AIR NLET CONTROL Filed sept. 5o, 1921 Patented Dec. 8, 1925.

JOI-IN FARKAS, OF DETROIT, IWIICHGAN,

ASLGNOR OF ONE-HALF TO CHARLES H.

GRESER, OF DETRGIT lICGAN'.

AUXILIARY ARNLET CONTROL.

Application filed September Si?, 1921.

To ZZ to/tom fit 01mg/ concern:

Be it known that l. JOI-1N ltr-uniss, acitizen of the United States of America, residing at Detroit, in the county of Vilayne and State of Michigan, have invented certain new and useful improvements in tuxiliary Air-Inlet Controls, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to devices for controlling the entrance of auxiliary air into an intake manifold of an internal combustion engine, and has for one of its objects, the provision of a valve controlling` the entrance of auxiliary air into the intake inanifold, which valve is normally operated with the throttle valve but is connected to the choke valve to be operated therewith independent of the throttle valve. Other objects Of the invention reside in the novel features of construction as more fully hereinafter set forth.

In the drawings:

Figure 1 is a perspective view of a oonstruction embodying` my invention;

Figure 2 is a top plan view showing the operating connections between the choke, throttle and air inlet valves;

Figure 3 is a side elevation of a modified construction.

1 is the intake manifold of an internal combustion engine and 2 the carburetor in communication with the intake manifold. 3 is the throttle valve at the outlet end of the caid'mretorl and 4 the choke valveV at its inlet end. 5 is a rock arm fixedly secured to the shaft 6 of the throttle valve and 7 is a rock arm fiXedly secured to the shaft 8 of the choke valve, these rock arms being operated by suitable connections (not shown) extending to positions'where they may be conveniently actuated,

For the purpose of providing entrance of auxiliary air into the intake manifold which will vary as the gaseous mixture entering` into the intake manifold, there is the air inlet valve 9 which is preferably of the plug type and is connected into the gasket 10 insertable between the carburetor and intake manifold. The stem 11 of this valve has fixedly secured thereto at one end the rock arm 12, which latter has the eye 13 at its outer end in which is inserted the depending pin 14a of the block 14. 15 is a coil spring connected to the outer ends of the rock arms semi no. 504,529.

5 and 12 for normally operating the air inlet -.'alve 9 with the throttle valve 3, the convotuti-ons of this coil spring normally lying adjacent to each other so that it will swing the rock arm 12 in either direction and upon the opening` of the throttle valve will proportionately open the air inlet valve as well as close the air inlet valve upon closing of the throttle valve.

It is essential to have the air inlet valve 9 closed when the choke valve 4 is closed in starting the engine regardless of the-rotative position of adjustment of the throttle valve 3. For operating the air inlet valve with the throttle valve, there is the rod 16 pivotally connected at one end to the rock arm 7 and slidably extending through a horizontal hole in the block 14. This rod has the collar 17 iiXedly secured thereto which is adapted to engage the block 14 upon swinging of the rock arm 7 to thereby close the air inlet valve 9 upon closing of the choke valve 4. Since the operating connection between the air inlet valve and throttle valve includes the coil spring l5, closing movement of the air inlet valve with the choke valve is permitted regardless of the position of the throttle valve and its rock arm. The arrangement is also such that the rock arm 12 for the air inlet valve may swing upon movement of the throttle valve 3 without moving the choke valve*A 4, the rod 16 being adapted to swing laterally about the rock arm 7.

For the purpose of heating the air leadinto the air inlet valve7 there is the pipe 18 which connects into the space between the exhaust manifold 19 of the engine and the surrounding casing 20 which is spaced from the exhaust manif-old and preferably has its ends open.

In the modification shown in Figure 3, the air inlet valve connects directly into the intake manifold.

What I claim as my invention is:

1. The combination with an intake manifold and a carburetor connected thereto having a throttle valve and a choke valve, of a single air inlet valve controlling the entrance of the auxiliary air into said manifold, a rock arm for operating said valve, connections between said rock arm and said throttle valve for normally operating the former with the latter and other connections between said rock arm and said choke valve for operating the former from the latter independently of the position of said throttle valve.

2. The combination With an intake inanifold and a carbureter connected thereto having a throttle valve and a choke Valve, of a single air inlet valve controlling` the entrance of auxiliary air into said manifold, a rock arm for operating said valve7 a resilient Connection between Said rook arni and said throttle .tor normally operating said auxiliary air valve with said throttle, and another connection between Said rock arin and said choke valve for closing said auxiliary air valve independentlyY of the position of Said throttle Valve.

3. The combination with an intake inanilold and a carbureter connected thereto having a throttle valve and a choke valve, ol. a single air inlet valve for controlling' the entrance oil? auxiliary air into said nnrnii'ohl, a rock arin for operating said Valve7 a spring between said rook arni and said throttle for normally operating said anxiliary air valve with Said throttle, a rod for operating said choke valve, and a collar on said rod adapted to engage said rock. arm noon the closing' of said Choke valve to close said auxiliar)v air Valve independently of the position of said throttle.

lin testimony whereo'l' all'ix iny signature. 

